toolkit: std::auto_ptr -> std::unique_ptr

Change-Id: I4566a0b7215b729f04591bed0ad5bed42f71f227
unotools: std::auto_ptr -> std::unique_ptr

Change-Id: I07d536d0ffdc9e09d8d0799396ad6e6c6909cf45
vbahelper: std::auto_ptr -> std::unique_ptr

Change-Id: Ic1b28e7f79cc7dad6a045eb64e5191991533990d
vcl: std::auto_ptr -> std::unique_ptr

Change-Id: I5a08186b465b15311c63784506a0ca0e119286e2